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Expired European patentEurope

Rotary pump

EP 0577064 B1 · Applicant: NAKAKIN CO., LTD.

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Overview

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Listed from its EPO record in Patent Yard's archive of European patents past their term. Its claims, description and drawings are in the EPO PDF and on Google Patents, and the Claude kit works from them.

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Why it's free to use

  • Filed June 29, 1993 and granted September 4, 1996. A European patent lasts at most 20 years from filing, so its term ended June 29, 2013.
  • A supplementary protection certificate, which can extend a medicine or crop-protection patent, adds at most five and a half years, so even that would have ended by December 29, 2018.
  • We check European rights only. A US or other national patent in its family could still be in force: check its family on Espacenet or Google Patents.
FiledJune 29, 1993
PublishedJanuary 5, 1994
GrantedSeptember 4, 1996
Term endedJune 29, 2013
Application numberEP 93110336
Classification (CPC)F04C15/0061

Timeline

Timeline From EPO dates

1994199619982000200220042006200820102012Application filedJune 29, 1993PublishedJan 5, 1994Patent grantedSep 4, 1996Term endedJune 29, 2013

Sources & verification

Official EPO records

Full published documentClaims, description and drawings as a PDF.EPOEuropean Patent RegisterProcedure, status, file inspection and legal events.EPOLinked open EP data recordThe bibliographic record this page is built from.EPO

Cross-check elsewhere

Google PatentsFull text, worldwide family, citing patents and legal events.patents.google.comEspacenetNational family members and their legal status.European Patent Office

Everything on this page comes from the EPO record linked above. EPO data used under CC BY 4.0.